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Analysis
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max time kernel
74s -
max time network
76s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
10/10/2022, 14:51
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
405KB
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MD5
eabf529b6670896aa7be9ebf12c8c4be
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SHA1
c11ba0946fb54213f128152214b201e438e77003
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SHA256
9c6e7d1cc84f620c9f9d01c11bb7bdc1e7b8412b7698aed8b836cc386e089031
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SHA512
6cfd6dbd1ce910579827698ffb4383a68ca50503bbfa83e875d762e29a8c64a077e52b4eaedd8d6ee23c74cc9541cfc6674504106e2bec307b2ab08b265b0f39
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SSDEEP
6144:+oe0SgPX/qIy7F3Ulc1pRs30Va2l2lU7dzQW1LrrwVfquS:+o/X/qWsRKZK7+4rd
Malware Config
Extracted
nymaim
208.67.104.97
85.31.46.167
Signatures
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Executes dropped EXE 1 IoCs
pid Process 612 ArToWLGfDyUGsf.exe -
Deletes itself 1 IoCs
pid Process 1564 cmd.exe -
Loads dropped DLL 1 IoCs
pid Process 1100 file.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
pid Process 1072 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1100 file.exe 1100 file.exe 1100 file.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1072 taskkill.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1100 wrote to memory of 612 1100 file.exe 30 PID 1100 wrote to memory of 612 1100 file.exe 30 PID 1100 wrote to memory of 612 1100 file.exe 30 PID 1100 wrote to memory of 612 1100 file.exe 30 PID 1100 wrote to memory of 1564 1100 file.exe 31 PID 1100 wrote to memory of 1564 1100 file.exe 31 PID 1100 wrote to memory of 1564 1100 file.exe 31 PID 1100 wrote to memory of 1564 1100 file.exe 31 PID 1564 wrote to memory of 1072 1564 cmd.exe 33 PID 1564 wrote to memory of 1072 1564 cmd.exe 33 PID 1564 wrote to memory of 1072 1564 cmd.exe 33 PID 1564 wrote to memory of 1072 1564 cmd.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1100 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ArToWLGfDyUGsf.exe
- Executes dropped EXE
PID:612
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1564 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "file.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1072
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c